If the Canon Printer Error E04 is still not resolved then try cleaning the gold-colored connectors before installing the ink cartridges. If still, the problem persists then it indicates that you need to replace the ink cartridges that you are using.
However, if nothing seems to work then it is time to get help from the Canon printer technical support team. The technical support team will provide you information and help you in resolving Canon printer error E04. The technicians have complete knowledge about the Canon printer so they can help you with resolving the error without any hassle. Contact now for Canon technical support and assistance.